Object is a collection of number of entities. Objects take up space in the memory. Objects are instances of classes. When a program is executed , the objects interact by sending messages to one ...

I won't say that, all by itself, C# 9 is worth the migration to .NET 5 (I might make that claim about C# 8 and .NET Core 3.x, though). The new version of C# 9 is more than just a nice feature of .NET ...